ASI+QPSK multiplexing QAM modulator

GQ-3692 ASI+QPSK 2 channel re-multiplexing QAM modulator is a headend equipment with the professional broadcasting quality according to DVB standard . Its main function is to directly convert signals which could be QPSK modulated from satellite or other program source to TS stream and remultiplex with ASI signal locally and then transmit via HFC or MMDS networks after QAM modulation. It neednt decompress, compress, QAM modulate, but directly modulate data stream demodulated to QAM signal sending to HFC or MMDS network. Therefore, it carries out SDTV/HDTV services and so on, providing many digital TV programs and data broadcasting programs with low-cost in SMATV. It is used widely in various digital brodadband systems such as digital TV, data broadcast, VOD, Internet and video conference etc.

Features

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            input interface ASI and digital satellite
  
  


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            ASI and QPSK loop output interface
  
  


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            ASI interface input data rate(per channel): 216Mbps(max)
  
  


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            Remultiplex 2 channels TS
  
  


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            PID filtering and reset, users add and delete programs at will, auto-mapping PID of program selected. Support user-defined PID and input bypass.
  
  


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            Support ITU-T J.83A and B
  
  


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            FEC up to DVB-C
  
  


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            Work at mode 16QAM32QAM64QAM128QAM256QAM
  
  


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            Input RFQPSK frequency950MHz-2150MHz
  
  


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            Input RF BW6MHz7MHz8MHz
  
  


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            Input data(ASI interface) bit rate:1.551.6Mbps
  
  


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            Output data bit rate:256Mbps
  
  


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            Output signals BW1.158.05MHz(the Fall is 0.15)
  
  


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            Output data symbol ratio17Mbaud/s
  
  


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            Output RF frequency48-860MHz
  
  


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            Output level100dBuV115dBuV(stepping available)
  
  


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            188 and 204 packet auto-identify, displaying input data format real time.
  
  


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            Large cache, ASI interface support input burst and average bit stream, reforming bit stream average in order to promote the output bit stream efficiency.
  
  


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            NIT mapping and sending, support 44 NIT mapping
  
  


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            10 groups PID filtering and re-mapping
  
  


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            Outstanding self-adapting filtering circuit designs to maximal reliability and availability.
  
  


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            Various PSI/SI information tables pick-up, parse and modification (customization available).
  
  


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            SI information replacement and insertion
  
  


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            Input data null packet filtering and output data stuffing
  
  


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            PCR correction function can correct various input data, respectively and accurately
  
  


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            Show and inspect system input bit rate and valid bit rate real-time
  
  


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            -20dB RF testing interface with IF output
  
  


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            Error alarming
  
  


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            LCD display
  
  


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            Network interface introduces remote maintenance, supervision and software upgrade
  
  


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            Power off memory